annual income

More than half of those recently polled by Gallup said an income of no more than $150,000 would qualify that person as rich. When asked how much money per year would be necessary for them to consider themselves "rich," 53 percent mentioned an income of $150,000 or less, and 71 percent said an income of $300,000 would be enough.

Wouldn't it be great if you could plot your retirement with one simple mathematical equation? We're not there yet, but Lincoln Financial Group comes close. Their formula: Just save up 10 times your annual income for retirement. But does the 10x Rule really work?